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In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 59 acres. Suppose we randomly survey 45 farmers from 1940.
Give the distribution of X.(Round your standard deviation to two decimal places.)
X~______________(__________________,__________________)
The middle 50% of the distribution forX,the bounds of which form the distance represented by the IQR, lies between what two values? (Round your answers to two decimal places.)
_________________acres (smaller value)
_________________ acres (larger value)
The probability that the client will select alternative a is 0.1, with P(c) = 0.5 and P(c) = 0.4. Identify the discrete random variable in this situation and determine its expected value.
What ethical issues are raised in the following: (a) Prisoners volunteer in anticipation of more favourable treatment.
1. develop numerical summaries of the data2. use regression analysis to develop an estimated regression equation that
Estimate of the population mean for all workers at the company. Unknown to you, the sampling distribution of the sample mean has an average value of 4.8.
scores on a statistics exam are given 85 72 92 90 74 65 68 59 74 85 63 79 81 92 95 74 88 55.in preparation for
What percent of the data points will fall in that range?
Speci?cally, we recall that to improve its safety record, the company began tracking the time in between recordable safety incidents. During the ?rst year of the pro- gram, the waiting time (in days) until the occurrence of a recordable safety in..
suppose cattle in a large herd have a mean weight of 1337 lbs and a standard deviation of 64. what is the probability
christine has always been weak in mathematics. based on her performance prior to the final exam in calculus there is a
What manual calculation do I use to calculate a 95% confidence interval based on a correlation coefficient (r)>?
The lowess fitted value is 0.883. Thus the value of adj discussed on the previous slide is 0.883 for spots with A=7. How is the lowess curve determined?
Mean waiting time was 15 minutes and that the standard deviation was 4 minutes. The 95% confidence interval for the population mean of waiting times is?
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